Home / 20,980.74-28,952.57-12,022.02

Finding the Fourth Proportional to 20,980.74, 28,952.57 and 12,022.02

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Solution

The fourth proportional to 20,980.74, 28,952.57 and 12,022.02 is: 16,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980.74 : 28,952.57 = 12,022.02 : x
  2. Step 2: Convert to fraction form
    20,980.74/28,952.57 = 12,022.02/x
  3. Step 3: Cross multiply
    20,980.74x = 28,952.57 × 12,022.02
  4. Step 4: Simplify right side
    20,980.74x = 348,068,375.59
  5. Step 5: Solve for x
    x = 348,068,375.59/20,980.74
  6. Step 6: Final answer
    x = 16,589.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.